Strength of Ages...RIP Proxy Singed 50/50
That was the only useful Mastery while I was playing Proxy Singed
Death Fire is good if you wanna go bit dmg which is useful as Laner SInged
But that 15% tenacity on the on Green Masteries with 300 free HP
Now another useless mastery
No mastery fits him more then Strength of Ages
FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUk